Building construction and hanger used therein



Feb. 7, 1933. c DAVls ET AL 1,896,290

BUILDING CONSTRUCTION AND HANGER .USED THEREIN Filed July 5, 1929 2 Sheets-Sheet 1 Fig.2.

CLARKEF. DAVIS EDWARD R. SAUNDERS INVENTORS ATTORNEY Feb. 7, 1933. c D s ET AL 1,896,290

BUILDING CONSTRUCTION AND HANGER USED THEREIN Filed July 5. 1929 2 Sheets-Sheet 2 CLARKEF. DAWS' EDWARD R SAUNDERS INV ENTORS ATTORNEY fatented Feb. 7, 1933 CLARKE r. mwis, or wnsm rntn him nnwrmp msAUNnEizs, or oRA rdim; lmw RSEY, AssIGNoRs T STRUCTURAL GYPSUM 'oonr'oim'rron, or LINDEN, NEW

JERSEY, A CORPORATION OF DELAWARE BUILfii NG consTRUo'rroN fikiwiit Usiib tion between the beam, or purlin, and the slab. V

,The pate'ht to William N o; 1,547,249, discwsj'es a e eiling'consti'iiction in which precast i0 slabs having ongitudinalr ipfqrcmnts therein, are su's'"'endedb'elbw floor ba'ih or piii'lin by iie'ans secured to the mp 6f the team, this haiigimeans being secured tb a device einbedded in theslab which engages i theifeinforeement therein. 1 v The patent t'o Rowan No. 1,632,453, disf eloj's'e's a bfllldlfig con'strn'ctioii in which a philiality. of pi'ecast slabs are suspended from a singlehanger supported from: the top of the E beafn, tlii's hanger projecting within a recess in the of the blocks. and engagin there the exteii'cled, ehds of reinforcements from adjan't j s .c c

It is among the objects of this present insrvention to provide a hanger nd abi ildinlg constrjiction will be an improvement upon the constructions shown and described in the above patents, and which w ill permit the slabsto be siispendedfrom, below the top of a floor beam or pnrlin, Such a construction has a number of advantages over those shown in the above patents, among which is that, when using the same 7 floor beams to support a floor composed of piecast 35 slabs, the floor slabs may rest perfectly flat upon the tops of the beams, as no part of the present hanger engages the top surface of the beam.

' g To this end the invention contemplates 'byengagmm with a reinforcemeht within 35 the slabs forming the same buildingco'nstrl'ic- 1525. serial 375,926,, r J

ti'on eriibodj iiig the hangers,the beams and the slabs t j 1:

In ciarrj ingont the inventionifi one of its 7 aspects, a; is provided forhiedeither 1 wi did we nat a he e d, f h is defofined to penetrate the web ojf a girder 'z'ifid'enga'ge the same, the oppbsite eiid ex-.

t difi e bw the bt in the i r a d p having a loop or ape ture adapted to receive the ends of metallic reinforcementswithin the slabs, whereby "the slabs are siis1?ended b 7 h? Wi i; f b' V Accord n tio slabs niaybe silsp'ehded from a single' hztnger each 'sl'a'b mayhave o'wii hanger, as circun istances shall dict'a e. I

In ail-ethe aspet the invj'e e n ten atplates the pit -stop ofa s'iiigle-wire or strap h n r P n eofiip e t r u the we 15f? a i 1 c d' d n g a; nforceni'eht within a slab located 011 each side it g rder z 1 In the prefei'redaiid the modified forms the slabs ifia'y be suspended sothat the tops theifeofare sfibstantiallyfiiishwith the under 7 surface of the beam where thisis desired, or they may he hung so as to provide a matespace between the topf of the slabs and the bottom bf the beams finthe passage of pipes, Wires, or the like. In t e d -we r A p v a V p S perspective View ofa preferred erhbfo'dir entof the invention. v I

Fig. 2 is a sectional View showing the in- Uehtiofi rise. J' v j 3 is, aIView along the line 33 of 0 Fig, 4 is" a view hang he 1i 4' 14 or Figlfi is 'a; view s'iihilar to Eigl dshowing the hanger in another position on the r I Fig. ,6 is av iew similartq F ig; 2 showing a odified ineithed pf hangiiliithe slabs.

- 1g is aview similar be Fi ;,2 showin iiidividfial hangers for each slab, V i 0 Fig. 8 is a perspective view of a modified form of the preferred embodiment.

Fig. 9 is a view of another form of the invention.

Fig. 10 is a sectional view showing the de vice of Fig. 9 in use.

Referring to the embodiment shown in Fig. 1, this consists of a length of wire or round stockl bent back upon itself to form a loop 2, the two ends being deformed at right angles to the main body to form feet 3.

In use, and as shown in Figs. 2 and 3, a beam is provided having an aperture'in its web, and such a beam may conveniently con-.

sist of a pair of L irons 4 at top and bottom thereof, enclosing between the pairs a' rod or bar 5 arranged in Z formation, that portion of the Z enclosed between the pairs of L irons 4 being pressure-welded throughout as at 6. While this type of beam has been found convenient, yet obviously any girder or purlin may be provided in which an aperture is, 10-

cated in the web to receive the hanger.

The hanger of Fig. 1 is so positioned on the beam that it penetrates the web thereof, the feet 3 engaging the upright portion of one of the L irons 4, and the loop 2 ofthe hanger extending below the bottom flange of the beam a sufiicient distance to engage the projecting ends 7 of longitudinal reinforcements 8 embedded in precast slabs 9. As shown in Fig. 4, these reinforcements project within a recess 10 in each slab and beyond the extreme end of each slab, so that when the two slabs are positioned with their. ends adjacent, a portion of the reinforce'mentof each slab projects within asingle recess, where it may be readily grasped bythe hanger 1.

" Obviously, the hanger 1 may be located either as in Fig. 3 to straddle the bar '5, or between the reaches oflthe'bar, as shown in Fig. 5. In either position the slabs may be so located by proportioning the length of the hanger 1, that the tops of the slabs are substantially flush with the bottom of the beam.

Where it is desired vto suspend the slabs well below the bottom of the beam, a longer hanger .11 may be used, as shown in Fig. 6, the arrangement being otherwise substantially the same. l

WVhere it is not found expedient to provide a slab or. slabs in whichthe reinforce ments therein project entirely beyond the end of the slab, the combination shown in Fig.7 may be us'ed.' Here each slab 9 is provided witha reinforcement 12, the ends 13 of which project within it's recess 10 but not beyond the end of the slab. By using two hangers 1,the end 13 ofthe reinforcement within each slab may be grasped so that the slabs are suspended below the bottom of the beam as before. l V v V In a great many instances it will be found possible to substitute the hanger shown in Fig. 8 for'that of Fig. 1. This hanger conof the type shown in Fig. 3 is used. However, as this circumstance will occur but infrequently it is entirely possible to use the strap hanger in practically all places where the wire hanger might be used.

In Fig. 9 still another form ofv hanger is shown which consists of a length of wlre or round stock 17 having a loop 18 formed at each end thereof'by twisting the wire or the like upon itself, and by arranging this hang-- er as shown in'Fig. 10, the projecting ends 13 of reinforcementslQl within the slots in adjacent ends of slabs 9 may be grasped and both'slabs suspended below the beam. Obviously the hanger of Fig. 9 maybe also'm'ade from a length ofstrap material, apertured at" each end.

In all cases the invention contemplates the filling ofthe recess or recesses in the ends of the slabs with grouting'which embeds the projecting end'of the reinforcement and the hangertherein. This not only serves to protect the hanger from ifire but likewise produces a substantially monolithic ceiling construction. V V g It will be' apparent that in a single building construction any or all of the various" forms of hanger combinations herein shown and described may be used, as in'some parts of the building itmay be desirable to suspend the slabs from I'beams, in others from channel beams and in still other portions from a beam having an open web such as shown in Fig. Again, where the bottoms of all beams from which slabs are to be suspended are not on the same level, a ceiling having a uniformly flat under-surface may still be provided by utilizing a combination of hangers such asshown in Figs. 2 and 6.

It'maybefound necessary to provide a plurality of hangers for each end of each slab, depending entirely upon the size and weight of the slab, and in such event the reinforcing rods and hangers may be multiplied as desired to suspend the slab from any numberof points. r

While Fig; 4. shows the recesses within which the projecting ends of the reinforcements are located to consist of isolated depressions, yet obviously these depressions may take the form of a channel or rabbet extending the entire width of the. end of each slab, in which eventthe grouting will be flowed into the recess or rabbet to completely close the same after erection to form a substantially monolithic structure.

The gauge or dimensions of the hanger or hangers will obviously be determined by the weight of slabs to be suspended thereon, but, as ordinarily, no weight rests upon these hangers except that of the slabs themselves and possibly the occasional weight of a'workman during erection, the hanger need not be made of unnecessarily heavy material.

In placing the slabs in position to form a floor it will only be necessary to place the hanger in the desired location and then lift the individual slab into position, so that the end of the reinforcement therein passes through the loop or aperture in the hanger as the case may be. The adjacent slab may likewise be positioned either on this same hanger or upon its individual hanger as shown.

It will be apparent that the above hanger and its method of use provides a simple and expeditious manner of suspending slabs from below the top of a floor beam while leaving the upper surface of the beam perfectly flat and without parts projecting thereabove to interfere with the floor to be laid directly thereon. The ceiling itself has a uniformly fiat undersurface and is produced without requiring subsequent adjustment and without the necessity of providingforms or the like.

The fact that the entire under-surface of' each slab consists of an unbroken mass of gypsum or the like, is highly desirable, in that it forms a fireproof protection not only to the beams and girders, but also to the reinforcements in the slabs and to the hangers engaging the same. 7

The beams or girders shown may be either those usually occurring in a building structure or specially provided and spaced to take the length of slabs used.

WVhat we claim is:

1. The combination with a fabricated beam having a pair of lower longitudinal truss In testimony whereof, we have hereunto subscribed our names this 2nd dayof July,

CLARKE F. DAVIS. EDWARD R. SAUNDERS.

elements and an open web, a precast slab of plastic material below the truss elements, said precast slab having a reinforcement therein, a portion of which is exposed, a hanger element having a deformed foot at one end thereof penetrating the web of the beam and engaging one of the truss elements, the opposite end of the hanger element comprising a stirrup with a horizontal bottom portion and two spaced apart Vertical portions, the exposed portion of the reinforcement in the precast slab resting upon the horizontal portion of the stirrup and sup ported through the instrumentality of the vertical portions of the stirrup on each side of the reinforcement.

2. The combination with a fabricated beam having a lower longitudinal truss element and an open web, a precast slab of plastic material below the truss element, said slab having a reinforcement therein, a por- 

